Trustees



(No Model.) 2 Sheets-Shawn 1.

L. GODDU;

NAILING MACHINE.

N0. 584;7'75. Patented June 22, 1897.

m: uonms runs co, mow-Luna. WASNINGTON, -c

(No Model.) 2 sheets-sheet 2.

L. G'ODDU. V NAILING MACHINE. No. 584,775. Patented June 22, 1897.

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kloaws TATES llama LOUIS GODDU, OF WVINOHESTER, MASSACHUSETTS, ASSIGNOR TO JAMES V. BROOKS, OF PETERSI-IAM, AND FRANK F. STANLEY, OF SlVAMPSOOTT,

MASSACHUSETTS, TRUSTEES.

MAILING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 584,775, dated June 22, 1897.

A lication filed December 18, 1895. Serial No. 572,573. (No model.)

To all whom it may concern:

Be it known that I, LOUIS GODDU, of VVinchester, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Nailing-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to that class of nailing-machines wherein the work is held upon a suitable horn and loose nails or fastenings are driven into the Work by suitable nail driving devices forming no part of this invention.

I have provided novel means for preventing breakage of the rotatable nail-hopper or its actuating mechanism should the hopper for any reason become jammed and its rotation stopped.

Figure l is a side elevation of the head and the upper part of the column or standard of a nailing-machine with my present invention applied thereto. Fig. 2 is a similar elevation of the base of the column and its attached mechanism for transmitting vertical movement to the horn. Fig. 3 is a front view with the cover removed and an axial sectional view of the hopper; and Fig. i is an enlarged detail view, partially in section, of the frictionooupling between the main driving-shaft and hopper-shaft.

The column or standard A, having mounted thereon a head A of suitable shape to provide bearings for the operative parts, the main driving-shaft D, driver-bar d, elevated thereby and spring-depressed, the separatoractuating arm 3 therefor, controlled by a cam s on the driving-shaft, and the horn or worksupport B are all of well-known construction in nailing-machines, forming no part of this present invention.

The horn-shaft B is prolonged by a rod B jointed to a lever B and surrounded by'a spiral spring B bearing at its lower end against a hearing A on the column and at its upper end against an adjustable nut B screwed on the rod B supporting the horn in a yielding manner and lifting it toward the nose of the nailing mechanism when permitted to do so, as will be-described.

The rear end of thelever B has jointed thereto a rod a, the upper part of which has formed thereon a rack a, longitudinally movable in guides a on the column, the rack being engaged by a pawl a on a pawl-carrier 0, which is maintained lifted throughout the greater part of every revolution of the main drivingshaft D, as will be described, to thereby, through rod a and lever B depress the horn B against the action of its liftingspring l3 and maintain it depressed, the rack-and-pawl connection being as shown in United States Patent No. 265,227, to which reference may be had.

VVllen the pawl-carrier a is depressed, a cam-block a disen gages the pawl a from the rack a, releasing or permitting the spring 13 to act and raise the horn against the under side of the stock, pressing the latter against the nose of the nailing mechanism.

The operator can at any time depress the horn independently by means of a treadle 13, its rear end resting against the lever B back of its fulcrum, the horn-shaft B being held in a bearing A on the column.

The driving-shaft D has fast thereon a camhub D, forming one member of a frictionclutch, the other clutch member D being loose on the shaft and longitudinally movable thereon by a wedge D of well-known construction, the member D being rotated continuously by a belt from any suitable source of power. (Not shown.)

The hopper H, having internal wings h, Fig. 3, to lift the nails or other fastenings and deposit them on the raceway H, is secured to a rotatable hopper-shaft 7t.

Referring to Fig. 4, the hopper-shaft h" is shown as provided with a fixed collar or annular enlargement h and a longitudinallymovable collar 7L3, splined to the shaft, and between the collars a sleeve h having wormteeth 72 is mounted loosely 011 the shaft.

Between the ends of the sleeve 72 and the two collars are interposed leather or other suitable friction-washers w, the shaft h and parts mounted thereon having a bearing in a boss A of the head A.

A cupped nut 71, is screwed onto the end of the hopper-shaft, and a strong spring S is interposed between the inner side of the nut and the collar 71 pressing it against the adjacent washer 20, so that the sleeve 7L is connected to the hopper-shaft by a frictioncoupling to normally rotate therewith.

The main shaft D is provided with a bevelgear g, in mesh with a similar gear 9' on a worm-shaft 9 having a worm g thereon in mesh with and to rotate the worm-sleeve 7Z4.

Should the nails or fastening's in the 110pper H jam or stop rotation thereof in any manner, the sleeve h will rotate on the hopper-shaft, held from rotation, overcoming the force of the spring S and there will be no breakage of the parts, as would be the case if the worm-shaft g were geared directly to the hopper-shaft.

The mechanism hereinbefore described is simple and effective and operates rapidly and accurately to perform the desired result.

In a nailing-machine, an actuating-shaft, a worm-shaft geared thereto, a rotatable hopper, a hoppershaft having a collar fast thereon, a spring-controlled collar loose on said shaft, and a worm-gear sleeved on the hopper-shaft between the fast and loose collars, in mesh with the worm-shaft and to normally rotate the hopper-shaft, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS GODDU.

\Vitnesses:

GEO. W. GREGORY, EMMA J. BENNETT. 

